Terminate contract with property management

[Anna L.]

As a first time rental property investor with long distance, I made many mistakes.

Recently, I realized my management company over charged me a lot even though with minor issues and suggested some installation which is not necessary. On top of that it caused lots of miscommunication and I can't trust them anymore. 

So I decided to terminate the contract with current management company and will collect the payment from the tenant directly.

I don't see any term agreement on my contract with the management company.

1. Is it possible to terminate the contract anytime if I want?

2. Any suggestions to collect the payment from the tenant directly?

3. Do they transfer the security deposit and other documents to me? 

I found a general contractor who will fix any issue on the property and I will have maintenance insurance plan. 

Any suggestions or experience would like to share? I'd appreciate that.